From d0ab1edf67bda2fd5fa672106fbdbe1dfb923a5e Mon Sep 17 00:00:00 2001
From: Joao Matos <joao@tritao.eu>
Date: Mon, 18 Feb 2019 12:37:21 +0000
Subject: [PATCH] Added support for `csversion` API to dotnet toolset.

---
 src/tools/dotnet.lua        |  4 ++++
 tests/tools/test_dotnet.lua | 11 +++++++++++
 2 files changed, 15 insertions(+)

diff --git a/src/tools/dotnet.lua b/src/tools/dotnet.lua
index d7445b04..a22a6b22 100644
--- a/src/tools/dotnet.lua
+++ b/src/tools/dotnet.lua
@@ -294,6 +294,10 @@
 			table.insert(flags, table.implode(cfg.defines, "/d:", "", " "))
 		end
 
+		if cfg.csversion ~= nil then
+			table.insert(flags, '/langversion:' .. cfg.csversion)
+		end
+
 		return table.join(flags, cfg.buildoptions)
 	end
 
diff --git a/tests/tools/test_dotnet.lua b/tests/tools/test_dotnet.lua
index 8ed7c8a7..3f5bb6cf 100644
--- a/tests/tools/test_dotnet.lua
+++ b/tests/tools/test_dotnet.lua
@@ -44,3 +44,14 @@
 		prepare()
 		test.isequal("mcs", dotnet.gettoolname(cfg, "csc"))
 	end
+
+
+--
+-- Check support for the `csversion` API
+--
+
+function suite.flags_csversion()
+	prepare()
+	csversion "7.2"
+	test.contains({ "/langversion:7.2" }, dotnet.getflags(cfg))
+end